Warwick astronomers calculate that some white dwarfs would look green, pink, cyan, yellow or purple, including what may be the first green star. The colors are computed from spectra, since no white dwarf is near enough to see.
Perspective Coverage
5 publishers
- Builder
- Builder 57%
- Operator
- Operator 38%
- Investor
- Investor 5%
Reality
- Evidence60
- Adoption
- Not scored
- Hype gap+25
- Incentives30
- Confidence68
Caltech and Michigan theorists find a dying Sun shedding mass in 4,600 random kicks unravels the giant planets' orbits within 10 billion years in 90% of runs. It is a simulation result built on kick sizes inferred from Gaia binaries, and the reported figures do not cleanly support the hundredfold speed-up over the old estimate.
Reality
- Evidence45
- Adoption
- Not scored
- Hype gap+35
- Incentives
- Not scored
- Confidence55
Astronomers re-reading 1999 Hubble spectra of white dwarf HS 0209+0832 found unusually high niobium that may trace matter the star shed as it died. The team proposes that some of that debris built a gas giant hinted at in TESS data, though the planet remains a candidate.
Reality
- Evidence55
- Adoption
- Not scored
- Hype gap+25
- Incentives30
- Confidence60
Gemini North resolves the streaks of Pa 30, likely remnant of the 1181 supernova, into knots of gas
Gemini North imaging shows the streaks of Pa 30, the probable remnant of the 1181 supernova, are knots of gas strung like pearls. Because it is the Milky Way's only known Type Iax remnant, astronomers plan to use its features to look for more like it.
Reality
- Evidence55
- Adoption
- Not scored
- Hype gap+10
- Incentives
- Not scored
- Confidence50
IISc model grows a magnetized white dwarf to 2.4 solar masses, well past the Chandrasekhar limit
Indian Institute of Science simulations let a magnetized white dwarf reach about 2.4 solar masses, well above the 1.4 Chandrasekhar limit. The model traces one route a star could take, and how many of the Type Ia supernovae used to measure cosmic distances start that way is still open.
Reality
- Evidence50
- Adoption
- Not scored
- Hype gap+15
- Incentives35
- Confidence50
Warwick-led astronomers tie niobium at over 1,000 times solar levels in a white dwarf to a candidate planet made from what the star shed as it died. If it holds up, it shows planets can still form after a star has died.
Perspective Coverage
6 publishers
- Builder
- Builder 51%
- Operator
- Operator 34%
- Investor
- Investor 15%
Reality
- Evidence62
- Adoption
- Not scored
- Hype gap+30
- Incentives40
- Confidence60
White dwarf RXJ0528+2838 has driven a bow shock for at least 1,000 years without a disc
Astronomers find white dwarf RXJ0528+2838 has sustained a bow shock for at least 1,000 years with no disc to power it. Its strong magnetic field may account for part of that, and the team says an unexplained energy source may supply the rest.
Reality
- Evidence55
- Adoption
- Not scored
- Hype gap+20
- Incentives40
- Confidence55